memory-hotplug: implement register_page_bootmem_info_section of sparse-vmemmap

[linux-block.git] / mm / Kconfig

diff --git a/mm/Kconfig b/mm/Kconfig
index 0b23db9a879177decb8c6f96f9d8c5266ba62a2c..2c7aea7106f9816dc41184f01a2d367c81749a1d 100644 (file)
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -162,10 +162,16 @@ config MOVABLE_NODE
          Say Y here if you want to hotplug a whole node.
          Say N here if you want kernel to use memory on all nodes evenly.
 
+#
+# Only be set on architectures that have completely implemented memory hotplug
+# feature. If you are not sure, don't touch it.
+#
+config HAVE_BOOTMEM_INFO_NODE
+       def_bool n
+
 # eventually, we can have this option just 'select SPARSEMEM'
 config MEMORY_HOTPLUG
        bool "Allow for memory hot-add"
-       select MEMORY_ISOLATION
        depends on SPARSEMEM || X86_64_ACPI_NUMA
        depends on HOTPLUG && ARCH_ENABLE_MEMORY_HOTPLUG
        depends on (IA64 || X86 || PPC_BOOK3S_64 || SUPERH || S390)
@@ -176,6 +182,8 @@ config MEMORY_HOTPLUG_SPARSE
 
 config MEMORY_HOTREMOVE
        bool "Allow for memory hot remove"
+       select MEMORY_ISOLATION
+       select HAVE_BOOTMEM_INFO_NODE if X86_64
        depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE
        depends on MIGRATION